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