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