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