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