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