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