One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,6,9,10)(4,7,13,12)(11,14,15,16)(17,18,23,27)(19,24,28,30)(20,22,26,32)(21,25,31,29)(33,34)(35,41)(36,44)(37,40)(38,43)(39,46)(42,47)(45,48)(1,2)(3,6)(4,7)(5,8)(9,10)(11,14)(12,13)(15,16)(17,19)(18,24)(20,29)(21,22)(23,28)(25,26)(27,30)(31,32)(33,34,37,40)(35,38,43,41)(36,39,46,44)(42,47,45,48)(3,9)(6,10)(11,15)(14,16)(19,28)(21,31)(24,30)(25,29)(33,34,37,40)(35,38,43,41)(36,39,46,44)(42,47,45,48)(1,2)(3,10)(4,12)(5,8)(6,9)(7,13)(11,14)(15,16)(17,20)(18,22)(19,29)(21,24)(23,26)(25,28)(27,32)(30,31)(33,35)(34,38)(36,45)(37,43)(39,48)(40,41)(42,46)(44,47) involution — undirected(1,3)(2,6)(4,11)(5,9)(7,14)(8,10)(12,16)(13,15)(17,21)(18,25)(19,22)(20,30)(23,31)(24,26)(27,29)(28,32)(33,34)(35,41)(36,39)(37,40)(38,43)(42,48)(44,46)(45,47) involution — undirected(1,4,5,13)(2,7,8,12)(3,11,9,15)(6,14,10,16)(17,22)(18,26)(19,21)(20,27)(23,32)(24,25)(28,31)(29,30)(33,36,37,46)(34,39,40,44)(35,42,43,45)(38,47,41,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.