One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,6,10,9)(4,7,13,12)(11,14,16,15)(17,18,23,26)(19,24,27,21)(20,22,25,31)(28,29,32,30)(33,34)(35,38)(36,41)(37,40)(39,44)(42,45)(43,47)(46,48)(1,2)(3,9)(4,7)(5,8)(6,10)(11,15)(12,13)(14,16)(17,19)(18,24)(20,28)(21,26)(22,29)(23,27)(25,32)(30,31)(34,35)(39,41)(40,42)(46,47) involution — undirected(3,10)(6,9)(11,16)(14,15)(19,27)(21,24)(28,32)(29,30)(33,34,38,35)(36,39,44,41)(37,40,45,42)(43,46,48,47)(1,2)(3,6)(4,12)(5,8)(7,13)(9,10)(11,15)(14,16)(17,20)(18,22)(19,28)(21,30)(23,25)(24,29)(26,31)(27,32)(33,35,38,34)(36,41,44,39)(37,42,45,40)(43,47,48,46)(1,3)(2,6)(4,11)(5,10)(7,14)(8,9)(12,15)(13,16)(17,21)(18,19)(20,30)(22,28)(23,24)(25,29)(26,27)(31,32)(33,36)(34,39)(35,41)(37,43)(38,44)(40,46)(42,47)(45,48) involution — undirected(1,4,5,13)(2,7,8,12)(3,11,10,16)(6,14,9,15)(17,22)(18,25)(19,29)(20,26)(21,28)(23,31)(24,32)(27,30)(33,37,38,45)(34,40,35,42)(36,43,44,48)(39,46,41,47)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.