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