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