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