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