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