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