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