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