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