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