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