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